Process for vulcanizing a rubber solution.



UNITED STATES PATENT OFFICE.

HERMANN scnnnrn, or DUREN, GERMAlfIY, ASSIGNOR TO THE FIRM oF'nR. DEGEN.& K'UTH,

or DUREN, GERMANY.

rnocnss non ,vU cAmzmG A RUBBER SOLUTION.

No. eoasoe.

Patented Dec. 8,1908.

Application filed May 28, 1908.v Serial No. 435,507.

' a resident of Diiren, Rhenish Prussia, in the Kingdom of Prussia, German Empire, have invented certain new and useful Improvements-in Vulcanized-Rubber Solutions and Processes of Producing Same, of which the following is a specification.

This invention relates to the vulcanization of rubber in form of a solution so that the solution thereafter contains rubber in vulcanized form.

In vulcanizing the rubber in solutions by employing sulfur chlorid, vulcanization is effected without the application of heat but in this method the vulcanization takes place during evaporation and the vapors given oil are highly poisonous and cause irritating coughing.

- According to the present invention the rubber solution is mixed with an iodin solution which is capable of mixing therewith, andthe result is that the rubber of the solution is vulcanized while at the same time the sticky and viscous characteristics are taken from the solution without causing decomposition of same. Heating of the mixture is not necessary according to the new process.

The following particular example of this invention produces a rubber solution in which the rubber is contained in vulcanized form and which is exceedingl useful for surgical purposes being adapte to sink well into the-pores of the skin and thereby extremely serviceable as, a hand covering or as the covering for the surface to be operated upon. 4 grams of best Para rubber are dissolved in 100 am's of tetrachlorid of carbon and mixed co d with a solution of 0.4 grams of lodin in 100 grams of tetrachlorid of carbon. After standing for a considerable length of. time the mixture loses its stickiness SoHERrE,

and viscosity and may be filtered and sterilized. The resulting solution contains rubber in vulcanized form and does not give off poisonous vapors nor is it dangerously inammable.

I claim:' 1. The method of producing a vulcanized rubber solution consisting in mixing a rub ber solution with an iodin solution adapted to be mixed therewith.

. 2. The method of producing a vulcanized rubber solution consisting in mixin a solution of rubber in tetrachlorid of car on with a solution of iodin in tetrachlorid of carbon.

3. The method of producing a vulcanized rubber solution consisting in mixinga solution of rubber in tetrachlorid of carbon with a solution of'iodin in tetrachlorid of carbon, allowing the mixture to rest, and filtering the solution. thus obtained.

4. The method of producing a vulcanized rubber solution consisting in mixing a solution of rubber in tetrachlorid of carbon with a solution of iodin'in tetrachlorid of carbon, allowing the mixture to rest, filtering the solution thus obtained, and sterilizing same.

5.. As a new article of manufacture, a vulcanized rubber solution derived from rubber,

iodin, and a suitable solvent.

6. As a new article of manufacture, a vulcanized and sterilized rubber solution de-. rived from rubber and iodin both dissolved.

intetrachlorid of carbon.

canized rubber solution derived from a solu- In witness whereof I have hereunto set presence of two witnesses.

my hand in the HERMANN SCHERPE. Witnesses:

HENRY QUADPLIEG,

ELISE Kooumson. 

